Now, according to Elon Musk, SpaceX plans to do the same with the second stage—the Starship spacecraft—at the beginning of next year.
Why is this necessary?
SpaceX intends to conduct a series of Starship launches to low Earth orbit for the deployment of new satellites in the Starlink constellation and to create a fuel depot for refueling other Starships heading into deep space. Therefore, after the Starship returns to Earth, it will need to be landed in a way that prepares it for a new flight. To achieve this, the same service tower can be utilized.